Department of Horticulture Industry, Wonkwang University, Iksan 54538, South Korea.
Division of Smart Development, Department of Agricultural Engineering, NAAS, RDA, Jeonju city 54875, South Korea.
Food Chem. 2020 Mar 5;308:125657. doi: 10.1016/j.foodchem.2019.125657. Epub 2019 Oct 16.
This study investigated the effects of drought stress on Chinese cabbage (Chcab) by measuring plant growth responses, total antioxidant enzyme activities, the contents of bioactive compounds including glucosinolates (GLS, aliphatic and indolic), and binding with human serum albumin (HSA). Forty-day-old Chinese cabbage (Brassica rapa L. ssp. pekinensis) seedlings were transplanted into pots and maintained for three weeks at 10% (drought-treated, D-T) and 30% (control, C) soil water. The total leaf number, leaf area, and fresh and dry weights were significantly lower in D-T Chcab than in controls. Total GLSs and catalase activities were found to be significantly higher in D-T Chcab than in controls. Indolic GLSs were significantly higher than aliphatic GLSs in D-T Chcab. These results show that D-T Chcab reduced growth parameters and binding properties with HSA and influenced total contents of GLSs, polyphenols, flavonoids, total antioxidant enzyme activities, catalase and peroxidase.
本研究通过测量植物生长反应、总抗氧化酶活性、生物活性化合物（包括芥子油苷（GLS，脂肪族和吲哚）和与人血清白蛋白（HSA）的结合）的含量，研究了干旱胁迫对白菜的影响。40 天大的白菜（芸薹属植物亚种白菜）幼苗被移植到盆中，并在 10%（干旱处理，D-T）和 30%（对照，C）土壤水分下维持三周。与对照相比，D-T 白菜的总叶数、叶面积和鲜重、干重均显著降低。在 D-T 白菜中发现总 GLS 和过氧化氢酶活性显著高于对照。D-T 白菜中的吲哚 GLS 明显高于脂肪族 GLS。这些结果表明，D-T 白菜降低了生长参数和与 HSA 的结合特性，并影响了 GLS、多酚、类黄酮、总抗氧化酶活性、过氧化氢酶和过氧化物酶的总含量。
